Product Summary
The 1746-IB8 SLC 500 digital input module provides eight 24V DC sinking channels for general-purpose industrial use. This module operates within a 10-30V DC range and draws only 50mA from the backplane. Its robust design ensures reliable signal acquisition in both non-hazardous and Class 1, Division 2 hazardous locations.
Theme A: Product Procurement & Buyer Guide
Why Choose the 1746-IB8 for Your System
Procurement managers need a module that offers both compatibility and reliability. The 1746-IB8 integrates seamlessly into any SLC 500 chassis. It provides eight dedicated sinking input points for monitoring discrete sensors. This module handles a wide voltage range from 10 to 30 Volts DC. Its nominal input current sits at a steady 8mA at 24V DC. This stable performance reduces the risk of false triggering in noisy environments.
Critical Technical Specifications for Engineers
Application engineers must verify key electrical parameters before deployment. The 1746-IB8 features a maximum off-state current of just 1 milliampere. This low leakage current prevents phantom signals on your input channels. The module offers a signal delay of 8 milliseconds for both ON and OFF states. This fast response time suits high-speed monitoring tasks. The backplane current draw is a minimal 50 milliamps at 5 Volts DC. This low power consumption leaves more capacity for other modules.
Environmental and Safety Certifications
The 1746-IB8 holds essential certifications for global industrial use. It is UL and CE-certified, ensuring compliance with international safety standards. The module also passes NEMA standard ICS 2-230-tested noise immunity. This certification guarantees reliable operation in electrically harsh conditions. You can deploy this module in areas with Class 1, Division 2 hazards. Its operating temperature range spans from 0 to 60 degrees Celsius. This thermal tolerance suits most factory floor environments.
Theme D: Expert Technical Evaluation & Performance Review
Signal Processing and Electrical Isolation
The 1746-IB8 delivers precise signal processing for digital inputs. Its step response measures 100 milliseconds for input and 2.5 milliseconds for output. This performance ensures accurate state detection for your control logic. The module provides robust electrical isolation between circuits. It withstands 1500V AC dielectric testing between backplane and inputs. Communication circuits are isolated and tested at 500V. This high isolation protects your SLC 500 processor from field transients.
Power Dissipation and Thermal Management
Thermal performance is a key factor for cabinet design engineers. The 1746-IB8 dissipates only 0.27W per input channel. Total heat dissipation for the module is just 1.3W. This low thermal output equals only 4.4 BTU per hour. Such efficiency allows denser module placement without overheating. The module operates reliably in 5% to 95% non-condensing humidity levels. This moisture tolerance suits environments near wash-down areas or humid climates.
Mechanical Durability and Shock Resistance
Industrial environments subject equipment to constant vibration and shock. The 1746-IB8 withstands operational vibration of 2.5G at 57 to 500Hz. This resistance ensures secure connections and stable readings on moving machinery. The module also carries a shock rating of 30G. This rating protects the module during accidental impacts or heavy equipment operation. The module uses 1746-HT and 1746-HCA I/O connection cables for secure wiring. These connectors provide a reliable physical interface for field devices.
Logistics & Standard Packaging Details
- One Allen-Bradley 1746-IB8 SLC 500 Digital DC Input Module
- Product documentation and installation guide
- Static-safe packaging for secure transport
Express delivery shipping is available via FedEx, UPS, and DHL to meet your urgent production needs.
